DME 7.8

P0722

36, Speed Sensor
The ratio of transmission output speed to engine speed is monitored

Diagnosis conditions
- ATF level OK
- ATF temperature > 60 degree C
- Selector lever position 'D', 2nd, 3rd, 4th or 5th gear
- Engine speed > 3008 rpm

Possible fault cause
- ATF level too low or too high
- Short circuit to ground/B+/mutual short circuit or open circuit in the circuit to the control module
- Faulty shielding of signal lines
- Sensor for transmission output speed (output-shaft speed sensor) is faulty
- Transmission is faulty (no frictional connection)
- Tiptronic control module is faulty

Affected pins
Pin 14, pin 42 and pin 15

Diagnosis/troubleshooting

DANGER: Danger of scalding by hot ATF.

Hot ATF can cause burns if it comes into contact with the skin or clothing.
- Drain ATF only when cold.
- Wear suitable protective clothing.

CAUTION:
Risk of damage to the transmission input-speed sensor (turbine sensor) if the hydraulic control unit is laid on its back when removed.
- When the hydraulic control unit is removed, place it only with its bottom side on a suitable surface.

Work Instruction 1 - 4:

Work Instruction 5 - 9:

Work Instruction 10 - 16:

90, Gear monitoring - output drive
The ratio of transmission input speed to transmission output speed is monitored

Diagnosis conditions
- ATF level OK
- ATF temperature > 60 degree C
- Selector lever position 'D', 2nd, 3rd, 4th or 5th gear
- Engine speed > 1408 rpm

Possible fault cause
- ATF level too low or too high
- Short circuit to ground/B+/mutual short circuit or open circuit in the circuit to the control module
- Faulty shielding of signal lines
- Sensor for transmission output speed (output-shaft speed sensor) is faulty
- Transmission is faulty (no frictional connection)
- Tiptronic control module is faulty

Affected pins
Pin 14, pin 42 and pin 15

Diagnosis/troubleshooting

DANGER: Danger of scalding by not ATF.

Hot ATF can cause burns if it comes into contact with the skin or clothing.
- Drain ATF only when cold.
- Wear suitable protective clothing.

CAUTION:
Risk of damage to the transmission input-speed sensor (turbine sensor) if the hydraulic control unit is laid on its back when removed.
- When the hydraulic control unit is removed, place it only with its bottom side on a suitable surface.

Work Instruction 1 - 5:

Work Instruction 6 - 10:

Work Instruction 11 - 16: